in utils/logging.js [55:65]
reqCustomProps: function (req) {
const traceHeader = req.header('X-Cloud-Trace-Context');
let trace;
if (traceHeader) {
const [traceId] = traceHeader.split('/');
trace = `projects/${project}/traces/${traceId}`;
}
return {
'logging.googleapis.com/trace': trace,
};
},